← single night · whole-night plan
Which nights are best for a target over the coming weeks. The astronomy mark (darkness × altitude × Moon) is computed for every night; the weather and the overall mark exist only where Open-Meteo has a forecast (the next four days) or ERA5 history (past nights) — the rest is honestly blank.
| night of | astronomy | weather | overall | best window | highest | dark h | Moon | Moon sep. |
|---|---|---|---|---|---|---|---|---|
| 2036-02-20 Wed | 48 | — | unknown | 19:35–21:30 (good, 1.92 h) | 79.1° 15:55 | 10.06 | 32% | 125.0° |
| 2036-02-21 Thu | 46 | — | unknown | 19:35–21:25 (good, 1.83 h) | 79.1° 15:55 | 10.02 | 23% | 114.5° |
| 2036-02-22 Fri | 44 | — | unknown | 19:35–21:20 (good, 1.75 h) | 79.1° 15:50 | 9.97 | 16% | 103.9° |
| 2036-02-23 Sat | 41 | — | unknown | 19:40–21:15 (good, 1.58 h) | 79.2° 15:45 | 9.93 | 10% | 93.2° |
| 2036-02-24 Sun | 39 | — | unknown | 19:40–21:15 (good, 1.58 h) | 79.2° 15:40 | 9.89 | 5% | 82.3° |
| 2036-02-25 Mon | 38 | — | unknown | 19:40–21:10 (good, 1.5 h) | 79.1° 15:35 | 9.84 | 2% | 71.5° |
| 2036-02-26 Tue | 36 | — | unknown | 19:40–21:05 (good, 1.42 h) | 79.1° 15:35 | 9.8 | 0% | 60.6° |
| 2036-02-27 Wed | 33 | — | unknown | 19:45–21:00 (good, 1.25 h) | 79.1° 15:30 | 9.76 | 0% | 50.0° |
| 2036-02-28 Thu | 32 | — | unknown | 19:45–20:55 (good, 1.17 h) | 79.2° 15:25 | 9.71 | 3% | 39.9° |
| 2036-02-29 Fri | 28 | — | unknown | 19:45–20:55 (good, 1.17 h) | 79.1° 15:20 | 9.67 | 7% | 31.0° |
| 2036-03-01 Sat | 25 | — | unknown | 19:45–20:45 (good, 1.0 h) | 79.1° 15:15 | 9.62 | 14% | 25.2° |
| 2036-03-02 Sun | 20 | — | unknown | 19:50–20:35 (good, 0.75 h) | 79.1° 15:15 | 9.57 | 22% | 24.9° |
| 2036-03-03 Mon | 16 | — | unknown | 19:50–20:20 (good, 0.5 h) | 79.2° 15:10 | 9.53 | 31% | 30.5° |
| 2036-03-04 Tue | 12 | — | unknown | 19:50–19:55 (good, 0.08 h) | 79.2° 15:05 | 9.48 | 42% | 39.9° |
| 2036-03-05 Wed | 10 | — | unknown | 19:50–21:00 (marginal, 1.17 h) | 79.1° 15:00 | 9.44 | 53% | 51.1° |
| 2036-03-06 Thu | 8 | — | unknown | 19:55–20:50 (marginal, 0.92 h) | 79.1° 15:00 | 9.39 | 64% | 63.4° |
| 2036-03-07 Fri | 8 | — | unknown | 19:55–20:45 (marginal, 0.83 h) | 79.1° 14:55 | 9.34 | 75% | 76.3° |
| 2036-03-08 Sat | 8 | — | unknown | 19:55–20:45 (marginal, 0.83 h) | 79.2° 14:50 | 9.29 | 84% | 89.5° |
| 2036-03-09 Sun | 9 | — | unknown | 19:25–20:45 (marginal, 1.33 h) | 79.2° 14:45 | 9.24 | 92% | 102.9° |
| 2036-03-10 Mon | 10 | — | unknown | 19:55–20:00 (good, 0.08 h) | 79.1° 14:40 | 9.2 | 97% | 116.2° |
| 2036-03-11 Tue | 8 | — | unknown | 19:25–20:40 (marginal, 1.25 h) | 79.1° 14:40 | 9.15 | 100% | 129.0° |
| 2036-03-12 Wed | 7 | — | unknown | 20:00–20:35 (marginal, 0.58 h) | 79.1° 14:35 | 9.1 | 100% | 140.7° |
| 2036-03-13 Thu | 7 | — | unknown | 20:00–20:30 (marginal, 0.5 h) | 79.2° 14:30 | 9.05 | 97% | 150.3° |
| 2036-03-14 Fri | 7 | — | unknown | 19:30–20:25 (marginal, 0.92 h) | 79.1° 14:25 | 9.0 | 92% | 155.5° |
| 2036-03-15 Sat | 5 | — | unknown | 20:05–20:25 (marginal, 0.33 h) | 79.1° 14:20 | 8.95 | 85% | 154.2° |
| 2036-03-16 Sun | 4 | — | unknown | 20:05–20:20 (marginal, 0.25 h) | 79.1° 14:20 | 8.9 | 77% | 147.6° |
| 2036-03-17 Mon | 3 | — | unknown | 20:05–20:15 (marginal, 0.17 h) | 79.2° 14:15 | 8.85 | 68% | 138.5° |
| 2036-03-18 Tue | 3 | — | unknown | 19:35–19:45 (marginal, 0.17 h) | 79.2° 14:10 | 8.8 | 58% | 128.4° |
| 2036-03-19 Wed | 2 | — | unknown | 19:35–19:40 (marginal, 0.08 h) | 79.1° 14:05 | 8.74 | 48% | 117.9° |
| 2036-03-20 Thu | 1 | — | unknown | — | 79.1° 14:05 | 8.69 | 39% | 107.3° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2036-02-20&days=30"
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&days=30&format=csv" -o m31-calendar.csvOne row per night: score_astronomy always, score_weather / score only where a forecast or history exists (null otherwise, with weather_source saying which), best window, dark hours, Moon illumination and separation, transit. 7–60 nights. Errors: 400 with invalid_date or target_unresolved. Results are cached for six hours; calculation version 2026-10-10.1.